Oh, that's right. It wouldn't deter me in the slightest.
All it would do is make me ignore the ruling and sell whatever the hell I wanted on Craigslist anyway, and wait the two weeks it would take Congress to create new law that gets around this stupidity. Let those corporations try and sue everybody. Local LEOs and prosecutors are not going to waste their limited budgets on this shit.
Unenforceable. One of the keys to knowing a law or ruling is bad is when it is unenforceable and criminalizes everyday behavior. War on drugs, prohibition, gun laws etc....all more or less unenforceable laws that create a criminal class out of common citizens who are otherwise law abiding. Bah.